Safety with a small footprint, rugged module for railway applications

The MEN CB30C complies with the requirements of the EN 50218 and EN 50129 standards for software, system and hardware development in railways. Within these standards, the RCE module is now certified to safety integrity level SIL 2 and comes with the appropriate certification package, which includes the safety case and the certification report from TÜV SÜD. The package will simplify the certification process of the final system considerably and will consequently shorten the project time. To achieve the SIL 2 level, the board is monitored by a specially developed CPLD supervisor. In case the defined operating conditions like the supply voltage or temperature reach the critical limits, the safe supervisor interrupts the power to the subsystem, ensuring all external communications are stopped. With the onboard event logger error states can be read out and analyzed. According to the Rugged COM Express standard, the device is embedded in a solid aluminium frame protecting the electronics against environmental impacts like humidity, dust or electromagnetic radiation and additionally supporting operation in the extended temperature range of -40C to +85C via conduction cooling. And, of course the complete design is compliant to the EN 50155 railway standard.